OCRBattery Disconnect Switch with Keys, 2Pcs 12V-24V Battery Kill Switch Isolator Disconnect Cut Off Power for ATV Car Auto, On Off Battery Master Switch with Waterproof Key and Cover

Only fault I would give it is it’s hard to figure out a system to mount it. The mounting holes and posts for the terminals make it awkward. Aside from that it’s great.

Installation is extremely easy, simple operate and reliable. Use as added security on my ‘57 Chevy.

This master switch works well but the keys are made cheaply and there’s a bit of wiggle room in the locked position, they work though, and for a good price.

Use to power a trailer winch. Still working like new. I bought another to lock out a automobile battery power. No failure.

Installed these into my camper conversion to isolate the vehicle and house batteries. I simply drilled a hole through 3/4" plywood and slide the switch in place, securing it from the back side. All I see is a bit of the black switch body and the red handle. The handles lock in place when the switch is on, and remove when off. I tested the switches with a multimeter to make sure the actually cut off the current flow... they do!

I heard that these were cheap knock offs of the discontinued Duralast kill switches I have in other vehicles, so I threw them in the garbage, and bought the most expensive kill switch I could find. The expensive replacement doesn't have a removable key, but I'm more confident the car won't burn up. I just spent $11000 on an engine (540) and another $11000 on a tranny and rear, so why be thrifty here? The car already has a kill switch on the coil for theft, plus an alarm, so I really don't need the red key on this car. They looked nice, and came quickly, so I give them 5 stars. Based on hearsay, I decided "Why take a chance?", and threw them out.

Product appears to be substantially constructed, but failed after around 6 uses.

The plastic turning knob is not sized correctly and the plastic is weak. I would NOT recommend this brand.